Vulnerability
Malicious code in @monitoring-lib/error-tracking (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (491603ad44ed812c3d248696b00f7d4801a4c1dc23e4f23a3bb86f2ef499616d) On `npm install`, the `preinstall` lifecycle hook in package.json runs a Node one-liner that reads the installer's hostname (`os.hostname()`) and username (`os.userInfo().username`) and transmits them to an attacker-controlled Interactsh/OAST callback domain via two channels: an HTTPS GET request to `https://d8ks495t5p5ut2enft8041g7fusnfsy5e.oast.site/?h=<hostname>&u=<username>` and a DNS lookup of `monitoring-lib.<hostname>.d8ks495t5p5ut2enft8041g7fusnfsy5e.oast.site`. The package name uses a generic scope (`@monitoring-lib`) that does not correspond to a known publisher, and the version number `9999.0.0` is the canonical shape of a dependency-confusion attack — a public registry upload designed to override an organization's internal package of the same name. Combined, the package is a supply-chain recon beacon: any installer that resolves to this version leaks its host identity to the attacker, identifying victims whose private-registry configurations failed. ## Source: ossf-package-analysis (160b44403dfdcc6f9b6a3390ac9d1a2a55ed88c8a3cfd660850d573a89682453) The OpenSSF Package Analysis project identified '@monitoring-lib/error-tracking' @ 9999.0.0 (npm) as malicious. It is considered malicious because: - The package communicates with a domain associated with malicious activity.
No CVSS base score from NVD or GHSA yet. NVD typically scores within 24–72 hours of publication; GHSA usually within a day for OSS-flagged CVEs. Last record update .
For interim severity, fall back on KEV / EXPLOIT signals and the EPSS percentile (lower panel). Re-check this CVE after one cron tick — the score lands automatically when the source publishes.
FIRST.org publishes EPSS daily. Coverage isn't universal — pre-disclosure CVEs and reserved IDs don't carry an EPSS score until at least one exploitation signal lands. Score will appear within 24 hours of the next EPSS pull.
No exploitation, limited impact or prevalence